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fix ModifyResponse call to context.Get #299

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fix ModifyResponse call to context.Get #299

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7 changes: 3 additions & 4 deletions header/via_modifier.go
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Original file line number Diff line number Diff line change
Expand Up @@ -54,7 +54,7 @@ func (m *ViaModifier) ModifyRequest(req *http.Request) error {

if v := req.Header.Get("Via"); v != "" {
if m.hasLoop(v) {
err := fmt.Errorf("via: detected request loop, header contains %s", via)
err := fmt.Errorf("via.ModifyRequest: detected request loop, header contains %s", via)

ctx := martian.NewContext(req)
ctx.Set(viaLoopKey, err)
Expand All @@ -76,11 +76,10 @@ func (m *ViaModifier) ModifyRequest(req *http.Request) error {
func (m *ViaModifier) ModifyResponse(res *http.Response) error {
ctx := martian.NewContext(res.Request)

if err, _ := ctx.Get(viaLoopKey); err != nil {
if _, ok := ctx.Get(viaLoopKey); ok {
res.StatusCode = 400
res.Status = http.StatusText(400)

return err.(error)
return fmt.Errorf("via.ModifyResponse: detected request loop")
}

return nil
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